CVE-2026-27971 | BDVDB-2026-318166 Detail

QwikDevqwik

Description#

Qwik is a performance focused javascript framework. qwik <=1.19.0 is vulnerable to RCE due to an unsafe deserialization vulnerability in the server$ RPC mechanism that allows any unauthenticated user to execute arbitrary code on the server with a single HTTP request. Affects any deployment where require() is available at runtime. This vulnerability is fixed in 1.19.1.

Impact#

Per CVSS v4.0: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-502 Deserialization of Untrusted Data

References#

https://github.com/QwikDev/qwik/security/advisories/GHSA-p9x5-jp3h-96mm

Exploit#

No public exploit known

History#

Version 12026-03-03Record published in the CVE List.
Version 22026-03-04Most recent update recorded in the CVE List.

Published

Published: 2026-03-03
Last modified: 2026-03-04

Vendor information

Vendor: QwikDev
Product: qwik

All QwikDev vulnerabilities

Score

9.2 Critical

EPSS

5.4%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 92.8.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Insecure Deserialization

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 1.19.1
Fixed
Not stated

Scoring System

CVSS v4.0

9.2 Critical

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Attack Requirements	Present
Privileges Required	None
User Interaction	None
Vulnerable System Confidentiality	High
Vulnerable System Integrity	High
Vulnerable System Availability	High
Subsequent System Confidentiality	None
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).